He wasn't offering her dinner, he asked her how she'd like a T-Bone.
lol
GEORGE COSTANZA: Well, I am just a T-bone kinda guy. Love that T-bone. In fact, you might as well call me--
WATKINS: That sounds good. I'll have one, too.
KRUGER: Watkins, you're havin' a T-bone?
WATKINS: I love 'em.
KRUGER: Well, then we should call you T-bone.
GEORGE: Uh, no. No, we shouldn't.
KRUGER: T-bone!
ALL (chanting): T-bone! T-bone! T-bone! T-bone! T-bone! T-bone! T-bone! T-bone!
LOL!!!
good one.